introduction to aprs ben townsend ak2x steve piotrowski kc2qzf major credit to bob bruninga wb4apr...
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Introduction to APRSBen Townsend AK2XSteve Piotrowski KC2QZF
Major Credit to Bob Bruninga WB4APR the inventor!
Automatic P_ Reporting SystemSo What’s the “P_”?Position?The “P” is for Packet because:APRS IS FOR MORE THAN POSITION!Position IS what we use the most and
it’s pretty easy to get started
Introduction to APRS
The “S” is for SystemWhat are the components and what
do they do?There are transmitters and receiversThere are repeaters but it works
simplex There are internet gateways In North America, it’s all on the same
frequency
Introduction to APRS
The transmit end is pretty simpleA 2M radio on 144.390 (unless you
want to run a private network, which you can)
A TNC (terminal node controller)A GPS if you want to send live
position updatesYou can use a PC for a fixed stationA TNC like a KPC3+ can work without
a PC
Introduction to APRS
On the Receive endA 2M radioA TNCA PC to display the data
OR you can view it on the internet as long as there is an internet gateway in the area of the transmitter
Introduction to APRS
Introduction to APRS
Introduction to APRS
DigipeatersTraditional Packet you had to know
the callsign of the digipeater and then connect or use “via”
With APRS and current guidelines, make it a LOT easier.
Whether you are in Albany, Anaheim, or Ann Arbor, your “path” can be the same
Introduction to APRS
Wide1Wide2Wide3Wider than that?
Be careful with your tracker and digipeater programming
Follow published standards to avoid becoming a QRM factory!
Introduction to APRS
So if the Digipeaters all have the same call sign, why don’t packets go on FOREVER?
Packet aging! We all get older and so do APRS packets.
Wide1-1wide2-1Wide2-2Wide3-3?Responsibilities of the digi owner!
Introduction to APRS
Internet Gateways (iGates)Need Antenna, Radio, TNC and PC.Automatic Packet Reporting System-
Internet ServiceRelays local RF APRS traffic to APRS-
IS network,Some relay APRS-IS Data to local RF.
Not all Digis are iGatesAppend string to APRS packetqAR,iGateCall
Introduction to APRS
Many websites store/display APRS-IS Data.
Different features and abilities on each site.
I prefer openaprs.net and aprs.fi.See all activity on local map.Track specific call signs.View log of packets and historic
data.
Introduction to APRS
Introduction to APRS
Introduction to APRS
New York QSO PartyMobile Contest StationOther Stations can track progress, new counties.Status Messages, Operating FrequencyDigi Coverage?
www.nyqp.com Third Saturday in October
Introduction to APRS
Useful Links•http://aprs.org/•http://aprs.fi•http://www.db0anf.de/•http://www.ui-view.org/•http://aprs.net/•http://findu.com/http://openaprs.net•http://aprs-is.net•http://ak2x.bentownsend.com•Email Me: [email protected]
Introduction to APRS